cosine rule


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cosine rule

(koh -sÿn) See spherical triangle.
References in periodicals archive ?
There are three basic trig rules: the sine rule, cosine rule, and tangent rule.
There are three trig formulas we will use, sine rule, cosine rule, and tangent rule.
There are three basic trig rules, the sine rule, the cosine rule, and the tangent rule.